Patent · US Active

Delayed snapshot isolation for read service at a database

US11200221B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignee

SAP SE · DE

Inventors

Kyu Hwan Kim · Anyang-si, KR
Juchang Lee · Seoul, KR
Beomsoo Kim · Seoul, KR
Chang Gyoo Park · Gwanak-gu, KR
Reiner Singer · Schriesheim, DE
Christoph Roterring · Sinsheim, DE
Werner Thesing · Herbstein, DE
Michael Muehle · Walldorf, DE

Key dates

Filing date	Sep 19, 2019
Grant date	Dec 14, 2021
Priority date	—
Expiry date	Mar 6, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/273
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A computer implemented method is provided comprising receiving a group of transaction logs from a first database, allocating transaction logs from the group of transaction logs to a first queue and to a second queue, generating an end-of-group transaction log indicative of an end of the group of transaction logs, allocating the end-of-group log to the first queue and the second queue; replaying transaction logs from the first queue including the end-of-group transaction log allocated to the first queue, replaying transaction logs from the second queue including the end-of-group transaction log allocated to the second queue; and changing visibility of one or more transactions in response to replaying the end-of-group transaction log allocated to the first queue and the end-of-group transaction log allocated to the second queue. Related apparatus, systems, techniques and articles are also described.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.